(230965) 2004 XA₁₉₂

(230965) 2004 XA₁₉₂ is a Kuiper-belt object with a diameter of 339+120
−95 km. It has an absolute magnitude of approximately 4.42, and albedo around 26%. It was discovered on 12 December 2004 at Palomar Observatory.

(230965) 2004 XA₁₉₂

Precovery image of 2004 XA192 taken by the Palomar Observatory in 1989[1]
Discovery
Discovered by	Palomar
Discovery date	12 December 2004
Designations
Minor planet category	SDO (near or extended)[2]
Orbital characteristics[3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	9268 days (25.37 yr)
Earliest precovery date	29 August 1989
Aphelion	58.967 AU (8.8213 Tm)
Perihelion	35.465 AU (5.3055 Tm)
Semi-major axis	47.216 AU (7.0634 Tm)
Eccentricity	0.24888
Orbital period	324.44 yr (118503 d)
Mean anomaly	356.376°
Mean motion	0° 0^m 10.936^s / day
Inclination	38.07711°
Longitude of ascending node	328.7517°
Argument of perihelion	132.632°
Earth MOID	34.588 AU (5.1743 Tm)
Jupiter MOID	30.7418 AU (4.59891 Tm)
TJupiter	4.703
Physical characteristics
Dimensions	549 km[4] 339+120 −95 km[5]
Rotation period	7.88 h (0.328 d)
Sidereal rotation period	7.88 [3]
Geometric albedo	0.09 (assumed)[4] 0.26+0.34 −0.15[5]
Apparent magnitude	19.84 [6]
Absolute magnitude (H)	4.2[3] 4.42±0.63[5] 4.6[4]

It is currently at 35.8 AU from the Sun, near its perihelion.[7]

References

1. Lowe, Andrew. "(230965) 2004 XA192 Precovery Images". andrew-lowe.ca.
2. Marc Buie (23 August 2014). "Orbit Fit and Astrometric record for 230965". SwRI (Space Science Department). Retrieved 14 November 2014.
3. "JPL Small-Body Database Browser: 230965 (2004 XA192)" (2011-11-22 last obs; arc: 22.23 years). Retrieved 11 April 2016.
4. Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 28 April 2019.
5. TNOs are Cool: A survey of the trans-Neptunian region. X. Analysis of classical Kuiper belt objects from Herschel* and Spitzer observations p. 18
6. 0 & n = 230965 AstDys Summary for (230965) 2004 XA192 Retrieved 31 August 2009
7. AstDys Ephmerides for (230965) 2004 XA192, Retrieved 31 August 2009

External links

• (230965) 2004 XA192 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters